Skip hoist



April 21, 1925.

R. H. BEAUMONT Filed Jan. 15, 1923 2 Sheets5heet l April 21-, 1925. 1,534,891 R. H. BEAUMONT SKIP HOIST Filed Jan. 15, 1925 2 Sheets-Sheet 2 Patented Apr. 21, 1925.

UNITED STATES PATENT ()FFICE.

ROBERT H. BEAUMONT, 0F RAnNoR, PENNSYLVANIA, ASSIGNOR TO 12,. H. BEAUMONT COMPANY, OF PHILADELIEHI E NNSYLVANI A CORPORATION 01: PENNSYL VANIA.

SKIP HOIST.

Application filed January 15, 1923. Serial No. 612,673.

To all whom it may concern.-

Be it known that I, Rocnnrr H. BEAUMONT, a citizen of the United States, residing in Radnor, Delaware County, Pennsylvania, have invented certain Improvements in Skip Hoists, of which the following is a specification.

My invention relates to certain improvements in skip hoists of the type in which a bucket travels on inclined rails to the top of a storage bin and automatically dis charges its load into the bin-returning, after it has discharged its load, to be refilled.

One object of my invention is to provide means for preventing the bucket from being inverted and returning in the inverted position.

A further object of the invention is to provide a spring buffer at the top to cushion the blow of the bucket when it is moved tothe discharge position.

In the accompanying drawings:

Fig. 1 is a side view of the upper portion of a skip hoist illustrating my invention;

Fig. 2 is a face view of the mechanism shown in Fig. 1;

Fig. 3 is a detached perspective view illustrating the bucket;

Fig. 4 is a side view of the upper portion of the hopper, showing the buffer in the raised position;

Fig. 5 is a sectional view of the buffer; and

Fig. 6 is an end view of the buffer.

Referring to the drawings, 1 is the frame of the skip hoist supporting a hopper 2 to receive coal, or other material. 3 is an extension of the hopper in which is an openin 4 through which the material is dischargeo l from the bucket 5. 6 is a cover for the opening 4 attached to a lever 7 pivoted at 8. The lever is raised by the bail 9 of the bucket when the bucket is elevated to a point to discharge its load into the opening 4. The

bail 9 is pivoted to the bucket 10 and is con nected to a rope 11, which is passed around asheave 12 at the upper end of the structure 13 formed by the rails 14 for the bucket and the braces 15. The rails 14 are inclined, as shown, and terminate at the upper end of the frame 1. Rails 17 form a track less in width than the track formed by the rails 14. These rails 17 extend. to the bottom of the structure.

the wheels 20, which are mounted on axles 22, have wider bearing surfaces than the wheels 19 and are flanged at each side and travel on the rails 17 to the upper portion of the frame 1 and then on the rails 14, as shown clearly in Fig. 2. As the bail 9 is pivoted at 10 to the bottom of the bucket, the movement of the wheels on their respective rails causes the bucket to be inverted, as shown in Fig. 1, to discharge its load into the opening 4 in the hopper 2.

In order to prevent the bucket from being fully inverted, arms 23 are provided. These arms are bent at their outer ends 24 to en gage the bail, as shown in Figs. 1 and 3, limiting the movement of the bucket. When the bucket mechanism is reversed to allow the bucket to move down the rails into position to receive a load, the bottom of the bucket moves first in the direction ofthe arrow, Fig. 1, the wheels 19 forming a pivot, the bucket moving down the rails in the correct position.

In order to prevent shocks, due to the sudden inverting of the bucket when the skip hoist is operated at a high speed, a buffer 25 is provided. This buffer consists of two sections pivoted at 26 and supported by springs 27 carried by brackets 28. The upper surface 29 of these sections form continuations of the rails 17 and are so lo cated that when the bucket 5, is inverted and the upper end thereof falls, the wheels 19 strike the buffer 25, which causes the springs to yield, thus reducing the shock. The buffer, in its normal position, extends above the upper surface of the rails 17, as shown in Fig. 4, and, when depressed by the weight- Of the bucket, is on a line with the rail, as illustrated in Fig. 1.

I claim:

The combination in a skip hoist, of a frame; a hopper supported by the frame and having an opening at its upper end; a door closing the opening; a pivoted arm carrying the door; inclined rails extending over the Opening in the hopper and other rails extending to the opening and at an angle to the first" mentioned rails; a bucket; having wheels adapted to travel on the rails; the rear wheels; when the bucket is above, the

, happen, traveling: on the: first mentioned rails and the front Wheels traveling on the other rails; a bail pivoted to the bottom ofthe bucket; means, on the buoket a-rranged to engage thebail when the; bucket is par tially inverted; andbu'fi'ers arranged in the path of the front wheels of the bucket, so that, when the bucket is inverted" to discharge its: lead, the shock wil-L be taken by the bufiers.

ROBERT H. BEAUMONT. 

